Mapping

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Under Verkartung refers to the collection of information from a source to a tab . Sources were often lists or chronicles, for example a personnel book in which recruitment and layoffs were listed, or a church book in which births, marriages and funerals were listed. The cards are usually sorted alphabetically, numerically or according to keywords and then form a card index . This way of working was typical of the 20th century.

Today, information is largely recorded using computers. Old card files are increasingly being transferred to databases and each card is replaced by a data record . In contrast to index cards, data records can be sorted quickly and as required, for example by gender, name, place of birth or date of birth.

Mapping should not be confused with mapping , the graphic representation of objects and facts of the earth's surface in maps or plans.

In genealogy

Extensive personal history files have been made mainly by genealogists , including the ancestral files of the German people and numerous files in the context of the church book mapping . For these and other collections the task is to convert the card index into a database. If the index cards have been written on by hand by many different people, the electronic conversion of the data is not an easy task. - To secure the data, a printout on paper or the edition in book form must be made (see also local family book ).

A directory of the incorporated documents and sources belongs to each card index . Historical files without a source directory are of little value.